Compact base



FIG. 1 is a bottom perspective view of our new compact base;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom view of thereof;

FIG. 5 is a side view thereof; and,

FIG. 6 is a top view thereof.

The broken line portion of FIG. 6 is included to show unclaimed internal subject matter only and forms no part of the claimed design. 

The ornamental design for compact base, as shown and described. 